Car-truck.



No. 696,6l7 Paftented Apr. l, |902..-

E. S. WOODS.

(IAR TRU CK.

-(App1ica.tion led July 27, 1901.)

(No Model.)

Unit @radins Parenti' rrrclri@ EDXVIN S. W'OCDS, OF CHICAGO, ILLINOIS.

CARfl'RUCK.

SPECIFICATION forming part of Letters Patent No. 696,617, dated April, 1, 19012.

Application led ll'uly 27,1901. Serial No. 69,876. (No model.)

To all 1071072@ it Netty cm1/cern:

Beit known that I, EDWIN S. WooDs, a citizen of the United States of America, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Car-Trucks, of which the following is a specification.

The present invention relates to railwaycar trucks,and more especially to that particular type of car-truck which forms the subject-matter of my prior patent, No. 655,386, dated August 7,1900, and in which the springs affording the required yielding support for the car-body are arranged between the bols ter and the side frames of the car-truck.

The presentimprovement has for its object to provide a substantial and eflicient construction and arrangement of parts in the abovedescribed type of car-trucks in which a free and independent lateral movement of the'car wheels and axles with relation to the truck to compensate for irregularities in the track is attained and with which a return ofthe parts to a normal position after a lateral movement in either direction is accomplished in a positive and certain manner, all as will hereinafter more fully appear, and be more particularly pointed out in the claims.

In the accompanying drawings, illustrative of the present invention, Figure l is a fragmentary side elevation of a car-truck embodyving the present improvements; Fig. 2, an enlarged detail side elevation with parts in section; Fig. 3, an enlarged central transverse section mainly on line m cc, Fig. 2. f 4

Similar numerals of reference indicate lil; parts in the several views.

Referring 'to the drawings, l represents a counterpart half ofthe side frame orpedestal portion of a car-truck provided with the usual open-bottomed recess, in which the axle-box 2 is arranged, the lower end of the frame members forming such recess being tied together by the usual removable tie-bar 3, as shown. As so arranged the axle-box is free to have lateral movement within a prescribed range in said recess to compensate for irregularities in the track andthe consequent independent lateral movements of the car-wheels and axle.

t is the car-truck bolster, the ends of which are adapted to iit in and interlock within a centrally-arranged rectangular rDruide-opening in the side frame or pedestal l and have a limited vertical movement therein.

5 represents a spring, ot' which any desired number may be employed, arranged between the under side ofthe bolster-end and the portion of the side frame l forming the bottom of the aforesaid centrally-arranged opening and affording a yielding support for the said bolster and `the car-body carried thereby.

6 isa track member, preferably in the form of aremovable plate, arranged in a receivingrecess therefor in the top surface of the axleboX 2, but which may constitu te an integral part of such axle-box, if so desired, Without departing from the spirit of the present invention.

7 is a crown-piece member secured to the upper or crown portion of the recess in the side frame which receives the axle-box and having a separated vertical relation above the track member or plate G, above described.

S represents a counterpart set of bearingrollers interposed between the opposed faces of the crown-piece 7 and the track-plate G and arranged in a direction longitudinal of the side frame l of the car-truck. Such rollers are adapted to form a frictionless bearing, upon which the axle-box track-plate 6 can move independent of the crown-piece 7 in a lateral movement of the car-axle and car-axle box with relation to the side frame l.

In the present improved construction the opposite faces ot the track-plate 6 and crownpiece 7 are formed with counterpart curved or dished recesses 9 and lO, which constitute bearing-surfaces for the rollers 8 in their rolling movement, and ,which recesses are individ ual to its respective roller. By'such curved or dished construction of the bearing surfaces or recesses 9 and l0 a return of the parts to a normal central position with relation to eachother is assured when the lateral force by which they were displaced therefrom ceases.

In the construction shown the respective recesses 9 and 10 are separated by a central stop-rib or partition ll and are provided with outer or marginal stop fianges or ribs l2, which afford means to limit the lateral movement of the car-axle and box in either direction to a prescribed limit, and as so construct- IOO ed a prescribed and limited lateral movement is afforded to the axle-box with relation to the side frame of the truck to prevent undue pressure ofthe flanges of the car-wheel against the track-rails and the undue wear and liability to fracture of said wheel-flanges under the heavy loads usually carried.

The present improved construction and arrangement of parts affords a very strong and durable connection of parts in that the bearing upon the rollers is a direct one.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination with a pedestal cart-ruck and its axle-boxes, of crown-pieces attached to the side frame in adirect Vertical plane above the axleboxes, and rollers directly interposed between said crown-pieces and the top of the axle-boxes and adapted to afford independent lateral movement to such axle-boxes, substantially as set forth.

2. The combination with a pedestal cartruck and its axle-boxes, of crown-pieces attached to the side frame in a direct vertical plane above the axle-boxes, and rollers directly interposed between said crown-pieces and the top of the axle-boxes, the opposed bearing-surfaces for such rollers having a curved or dished form adapted to afford lateral and self-centering movements to the axle-boxes, substantially as set forth.

3. The combination with a pedestal cartruck and its axle-boxes, of crown-pieces attached to the side frame in a direct vertical plane above the axle-boxes, and rollers directly interposed between said crown-pieces and the top ot' the axle-boxes, the opposed bearing-surfaces for such rollers having a curved or dished form adapted to afford lateral and self-centering movements to the aXle-boXes,and end iianges constitutingstops, substantially as set forth.

4. The combination with a pedestal cartruck and its axle-boxes, of crown-pieces attached to the side frame in a direct vertical plane above the axle-boxes, and a series of rollers directly interposed between each crown-piece and axle-box and adapted to afford independent lateral movement to the axle-boxes, substantially as set forth.

`5. The combination with a pedestal cartruck and its axle-boxes, of crown-pieces attached to the side frame in a direct vertical plane above the axle-boxes, and a series of rollers directly interposed between each crown-piece and axle-box, the opposed bearing-surfaces for such rollers having a dished or curved form adapted to afford lateral and self-centering movements to the axle-boxes, substantially as set forth.

6. The combination with a pedestal cartruck and its axle-boxes, of croWn-pieces.at tached to the side frame in a direct vertical plane above the axle-boxes, and a series of rollers direct-1y interposed between each crown-piece and axle-box, the opposed bearing-surfaces for such rollers having a dished or curved form adapted to afford lateral and self-centering movements to the axle-boxes, and end Iianges constituting stops, substantially as set forth.

7. The combination with a pedestal cartruck and its axle-boxes, of crown-pieces attached to the side frame in a direct vertical plane above the axle-boxes, track-plates secured to the tops of the axle-boxes, and rollers directly interposed between said crownpieces and the track-plates and adapted to afford independent lateral movement to the axle-boxes, substantially as set forth.

8. The combination with a pedestal cartruck and its axle-boxes, of crown-pieces attached to the side frame in a direct vertical plane above the axle-boxes, track-plates secured to the tops of the axle-boxes, and rollers directly interposed between said crownpieces and the track-plates,the opposed bearing-surfaces for such rollers having a curved or dished form adapted to afford lateral and self-centering movements to the axle-boxes, substantially as set forth.

9. The combination with a pedestal cartrnck and its axle-boxes, of crown-pieces attached to the side frame in a direct vertical plane above the axle-boxes, track-plates secured to the tops of the axle-boxes and rollers directly interposed between said crown-pieces and the track-plates, the opposed bearingsurfaces for such rollers having.,r a curved or dished form adapted to afford lateral and selfcentering movements to the axle-boxes, and end fianges constituting stops, substantially as set forth.

l0. The combination with a car-truck and its axle-boxes of rollers interposed directly between the outer ends of the truck-frame and the top of the axle-boxes, said rollers being subjected only to a crushing strain between the truck-frame and axle-boxes, substantially as set forth.

Signed at Chicago, Illinois, this 17th day of July, 1901.

EDWIN S. VOODS.

Witnesses:

ROBERT BURNS, HENRY A. NoTT.

IOO

IIC 

